/*flex 布局*/
.flex {
  display: flex;
}

.flex-wrap {
  display: flex;
  flex-wrap: wrap;
}

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-row-space-between {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.flex-row-space-around {
  display: flex;
  flex-direction: row;
  justify-content: space-around;
}

.flex-row-space-center {
  display: flex;
  flex-direction: row;
  justify-content: center;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-align-center{
  display: flex;
  align-items: center;
}
.flex-all-center {
  display: -webkit-flex;
  display: flex;
  justify-content: center;
  align-items: center;
}
.flex-1 {
  flex: 1;
}

.flex-2 {
  flex: 2;
}

.flex-3 {
  flex: 3;
}

.flex-4 {
  flex: 4;
}

.flex-5 {
  flex: 5;
}